| /* |
| * Copyright (c) 1997, 2007, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| |
| package com.sun.jmx.snmp.IPAcl; |
| |
| |
| |
| import java.security.acl.Permission; |
| import java.util.Vector; |
| import java.util.Enumeration; |
| import java.io.Serializable; |
| import java.net.UnknownHostException; |
| |
| import java.security.Principal; |
| import java.security.acl.AclEntry; |
| |
| |
| /** |
| * Represent one entry in the Access Control List (ACL). |
| * This ACL entry object contains a permission associated with a particular principal. |
| * (A principal represents an entity such as an individual machine or a group). |
| * |
| * @see java.security.acl.AclEntry |
| */ |
| |
| class AclEntryImpl implements AclEntry, Serializable { |
| private static final long serialVersionUID = -5047185131260073216L; |
| |
| private AclEntryImpl (AclEntryImpl i) throws UnknownHostException { |
| setPrincipal(i.getPrincipal()); |
| permList = new Vector<Permission>(); |
| commList = new Vector<String>(); |
| |
| for (Enumeration<String> en = i.communities(); en.hasMoreElements();){ |
| addCommunity(en.nextElement()); |
| } |
| |
| for (Enumeration<Permission> en = i.permissions(); en.hasMoreElements();){ |
| addPermission(en.nextElement()); |
| } |
| if (i.isNegative()) setNegativePermissions(); |
| } |
| |
| /** |
| * Contructs an empty ACL entry. |
| */ |
| public AclEntryImpl (){ |
| princ = null; |
| permList = new Vector<Permission>(); |
| commList = new Vector<String>(); |
| } |
| |
| /** |
| * Constructs an ACL entry with a specified principal. |
| * |
| * @param p the principal to be set for this entry. |
| */ |
| public AclEntryImpl (Principal p) throws UnknownHostException { |
| princ = p; |
| permList = new Vector<Permission>(); |
| commList = new Vector<String>(); |
| } |
| |
| /** |
| * Clones this ACL entry. |
| * |
| * @return a clone of this ACL entry. |
| */ |
| public Object clone() { |
| AclEntryImpl i; |
| try { |
| i = new AclEntryImpl(this); |
| }catch (UnknownHostException e) { |
| i = null; |
| } |
| return (Object) i; |
| } |
| |
| /** |
| * Returns true if this is a negative ACL entry (one denying the associated principal |
| * the set of permissions in the entry), false otherwise. |
| * |
| * @return true if this is a negative ACL entry, false if it's not. |
| */ |
| public boolean isNegative(){ |
| return neg; |
| } |
| |
| /** |
| * Adds the specified permission to this ACL entry. Note: An entry can |
| * have multiple permissions. |
| * |
| * @param perm the permission to be associated with the principal in this |
| * entry |
| * @return true if the permission is removed, false if the permission was |
| * not part of this entry's permission set. |
| * |
| */ |
| public boolean addPermission(java.security.acl.Permission perm){ |
| if (permList.contains(perm)) return false; |
| permList.addElement(perm); |
| return true; |
| } |
| |
| /** |
| * Removes the specified permission from this ACL entry. |
| * |
| * @param perm the permission to be removed from this entry. |
| * @return true if the permission is removed, false if the permission |
| * was not part of this entry's permission set. |
| */ |
| public boolean removePermission(java.security.acl.Permission perm){ |
| if (!permList.contains(perm)) return false; |
| permList.removeElement(perm); |
| return true; |
| } |
| |
| /** |
| * Checks if the specified permission is part of the permission set in |
| * this entry. |
| * |
| * @param perm the permission to be checked for. |
| * @return true if the permission is part of the permission set in this |
| * entry, false otherwise. |
| */ |
| |
| public boolean checkPermission(java.security.acl.Permission perm){ |
| return (permList.contains(perm)); |
| } |
| |
| /** |
| * Returns an enumeration of the permissions in this ACL entry. |
| * |
| * @return an enumeration of the permissions in this ACL entry. |
| */ |
| public Enumeration<Permission> permissions(){ |
| return permList.elements(); |
| } |
| |
| /** |
| * Sets this ACL entry to be a negative one. That is, the associated principal |
| * (e.g., a user or a group) will be denied the permission set specified in the |
| * entry. Note: ACL entries are by default positive. An entry becomes a negative |
| * entry only if this setNegativePermissions method is called on it. |
| * |
| * Not Implemented. |
| */ |
| public void setNegativePermissions(){ |
| neg = true; |
| } |
| |
| /** |
| * Returns the principal for which permissions are granted or denied by this ACL |
| * entry. Returns null if there is no principal set for this entry yet. |
| * |
| * @return the principal associated with this entry. |
| */ |
| public Principal getPrincipal(){ |
| return princ; |
| } |
| |
| /** |
| * Specifies the principal for which permissions are granted or denied by |
| * this ACL entry. If a principal was already set for this ACL entry, |
| * false is returned, otherwise true is returned. |
| * |
| * @param p the principal to be set for this entry. |
| * @return true if the principal is set, false if there was already a |
| * principal set for this entry. |
| */ |
| public boolean setPrincipal(Principal p) { |
| if (princ != null ) |
| return false; |
| princ = p; |
| return true; |
| } |
| |
| /** |
| * Returns a string representation of the contents of this ACL entry. |
| * |
| * @return a string representation of the contents. |
| */ |
| public String toString(){ |
| return "AclEntry:"+princ.toString(); |
| } |
| |
| /** |
| * Returns an enumeration of the communities in this ACL entry. |
| * |
| * @return an enumeration of the communities in this ACL entry. |
| */ |
| public Enumeration<String> communities(){ |
| return commList.elements(); |
| } |
| |
| /** |
| * Adds the specified community to this ACL entry. Note: An entry can |
| * have multiple communities. |
| * |
| * @param comm the community to be associated with the principal |
| * in this entry. |
| * @return true if the community was added, false if the community was |
| * already part of this entry's community set. |
| */ |
| public boolean addCommunity(String comm){ |
| if (commList.contains(comm)) return false; |
| commList.addElement(comm); |
| return true; |
| } |
| |
| /** |
| * Removes the specified community from this ACL entry. |
| * |
| * @param comm the community to be removed from this entry. |
| * @return true if the community is removed, false if the community was |
| * not part of this entry's community set. |
| */ |
| public boolean removeCommunity(String comm){ |
| if (!commList.contains(comm)) return false; |
| commList.removeElement(comm); |
| return true; |
| } |
| |
| /** |
| * Checks if the specified community is part of the community set in this |
| * entry. |
| * |
| * @param comm the community to be checked for. |
| * @return true if the community is part of the community set in this |
| * entry, false otherwise. |
| */ |
| public boolean checkCommunity(String comm){ |
| return (commList.contains(comm)); |
| } |
| |
| private Principal princ = null; |
| private boolean neg = false; |
| private Vector<Permission> permList = null; |
| private Vector<String> commList = null; |
| } |